Conjunctivitis, also known as pink eye, is a common condition that causes inflammation of the conjunctiva, the thin, transparent layer of tissue that covers the white part of the eye and lines the inside of the eyelid.

Symptoms of conjunctivitis may include redness, itching, and burning of the eye, as well as a discharge that can be clear or colored (yellow, green, or white). The eye may also be sensitive to light and feel gritty or sandy.

Conjunctivitis can be caused by a variety of factors, including bacterial or viral infections, allergies, irritants such as smoke or dust, and contact lenses. Treatment for conjunctivitis typically depends on the underlying cause of the infection.

Bacterial conjunctivitis is often treated with antibiotic eye drops or ointment, while viral conjunctivitis usually clears up on its own within a few days. Allergic conjunctivitis may be treated with antihistamines or other allergy medications, while irritant conjunctivitis may be treated by removing the irritant from the eye.

Prevention of conjunctivitis can be achieved through good hygiene practices, such as washing hands regularly, avoiding touching the eyes, and avoiding sharing towels or other personal items with others. It is also important to avoid rubbing the eyes, as this can spread the infection or irritate the eye further. Contact lens wearers should follow proper hygiene practices and avoid wearing contact lenses when the eyes are inflamed or infected.